@article{TAM_1987_13_1_a6,
     author = {Dragi Radojevi\'c},
     title = {One example of {Einstein} spaces},
     journal = {Theoretical and applied mechanics},
     pages = {77 },
     year = {1987},
     volume = {13},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAM_1987_13_1_a6/}
}